Finding the Fourth Proportional to 39,667.75, 54,742.53 and 22,438.72

Step by Step Solution

1. Step 1: Write the proportion equation
   39,667.75 : 54,742.53 = 22,438.72 : x
2. Step 2: Convert to fraction form
   39,667.75/54,742.53 = 22,438.72/x
3. Step 3: Cross multiply
   39,667.75x = 54,742.53 × 22,438.72
4. Step 4: Simplify right side
   39,667.75x = 1,228,352,302.76
5. Step 5: Solve for x
   x = 1,228,352,302.76/39,667.75
6. Step 6: Final answer
   x = 30,966.02